Relay contact device.



G. C. MURPHY.

RELAY CONTACT DEVICE APPLIOATION 11.55 JULY 30, ms,

Patented Sept. 8, 1914,

' gmvanio Gem"? 6 (Lb/lurk To all whom or; may-concern:

e 'rn r QTFFIGE' nomevmnn, xrnnrncmc RELAY contra'c'r newer;

Specification or Letters'letcnt.

Patented Sept. 8, 1914,

Original aphlicatioa'filed January 14, 1912, Serial No H0319 Divided si o this application filed July 1913. Serial no. cause; I

Be it known that I, GEORGE C. Murray, citizen of the United States, residing at, Louisville, in the'county of Jefferson and State of; Kentucky, have invented certain new and useful Improvements in Relay Qon tact Devices, of which the following is e specification, reference being had therein to the accompenyingdrewing.

This invention relates to circuit closing devices of the; solenoid type and has for its object the production of on eliicient means 'for closing on electric circuit when the solenoid is energized, and is especially adopted for use in connection with electric railwa signals as specifically defined in my application filed January 14th,

Another object of the invention is the prouction ota simple and efficient contact means ofthe solenoid ty e which consists ofe minimum number 0. parts.

' Withthe above and other objects in View this invention consists of certain novel corn- 'hinstions,constructions, and. arrangements seri arts as will he hereinafter fully ded and claimed.

if 1 In the accompanying dran ings -Figure1 is e front elevation of the solenoid for clos- /in -'-the desired electric circuits connect/ed theretoij Fig; 2 is a central vertical section through the: solenoid illustrated in Fig. 1, 3 is an enlarged side elevation partly in section. of one of the oontect shoes for operating with the SOlBIlOlLl illustrated in Fig. 1 Fig. 4' is an edge view of the structure illustrated in'Fig. 3 showing-the same mounted upon '11 support. Fig, 5 ise detail perspective of the supporting arm for the contact shoes. Fig.6 a central long1tudine]. section throu h the supportin em; and supporting she t for the contact oe.' By referring to the drawings lt.Wlll seen that the present invention consists of a solenoid adopted to he used in conneotion with electric railwaysignals as above described, and this device may be placed in any desired position upon the body of the car. The solenoid is preferably mounted upon a casing and comprises a mrignet 5 having a metal core 6. This core is provided with a pair of contact collars 7 -formed thereonin spaced relation and is also provided with a pair of collars 8 which are to limit the longitudinal movement 9 bracket 9 is carried by the casing kind is EIQVlGGd with an insulated v aperture l0 hrou'gh' which Works the reduced end 11 of the core'fi. A plug'l2 is carried hythe protector shield 13 1 and: constitutes a sto g tricnllyvoonnect the magnet with the source oi electrical-supply. iA- -plurel'ity o-fi posts supporting bolts 16 and these posts 15 carry at their outer ends shoes 17. The posts 15 ends 18, which laterally extending ends are provided with outwardly extending spaced ears 19 between which fit the laterallv extending fingers 20 of the shoesll7. y

A spring 21 is interposed between one of the cars 19 and the laterally extending fin gers 20 so as to normally exert gm outward the under face of the shoe 17 its indicated clearly in Fig. l-so as to add additional the shoes 17 is provided with a curved outer the collars 7 of the core or plunger 6 with the shoes as the collars are brought into these springs 21 will normally hold the shoes in firm contact with the collars 7..

Of course, the usual lead wires my be {connected tothe several contact shoes for l the purpose of conveying the current to the desired points.-

] The'operation of the device is as follows:

As themagnet 5 is energized the core 6 will be drawn upwardly, thereby causing the 'collers 7 to be brought into contact with the contact shoe 17 and close an electrical circuit therethrough. The contact shoes 17 will be limited in their upward swinging movement owing to the fact that the laterally extending fingers; 20 thereof will engage one of the spaced ears 19 and prevent the further upward swing of the shoes 17.

It sh uld be understood however, that as soon a the magnet 5 is deenergized, the

weight of the core 6 will cause the same to drop downwardly, and this downward movement will not be resisted by means of the are also provided with laterally extending.

shoes 17 engaging the collar 7 for the reason e cores 6 relative'to thema'gn et 5. 4

or thecore or plunger .6'. Binding posts are in-minted upon tlie casing 4 so as to elec- -"15:.are'supported Within the casing l upon pressure upon the shoes 17. This spring 2],? also projects undert-he finger 20 and engages out-ward pressure upon the shoes. Each of face 22 for facilitatingtheengagement of engagement therewith. It will be seen that thzgt the hoesi? m yield slightly clcwnwardly to allow the collars '7 to be released from tha core 6 The spring 21, lmwever, will ciiuse the shoes 17 to retain theiz normal position and at alltimes hold izfiese shoes m a. position t0 be readily engaged by the collarillli It, shcgxgldbe understand that the gmfpmge.

0f the present invention is to close a cirwlt through the contact shoes 17 by the anergazation of the magpt 5.

Having thus described film invfintion 'wl'lat 1s claimed asnew, 1s:---

( ,I i .7 A rela Contact shoe fan a relay qlavtcse oi: the c ass ciescribad cmiiprising :1 M51;

pl'yovided 'With a curved contmghgjomtfa su'aporting post,]said sjupportiug' 1:98: pm vi ed with a'la teqallyextendin pm 'tmn, ro- \fidd-Wiill'l a pan: of put'war 3011 m engaging m hulciing sale: spring agamsit acmenml tllsplacement therefrom,

spa-cad em laterally 2.x Ill/112g lwtween sialid spa posed between 0118 aroumi said laterally ilorfimlly exerting mm? have a yialdable 1n v V QIOVldtKl with an u'pmJm 

